Claude sub-agents, PRD, MCP improvements (#359)

1. Added Claude Code sub-agents
2. Added PRD tool to MCP Server
3. Added MCP Server UI to Dev Tools
4. Improved MCP Server Database Tool
5. Updated dependencies

apps/dev-tool/app/mcp-server/_components/mcp-server-tabs.tsx

@@ -0,0 +1,53 @@
+'use client';
+
+import { DatabaseIcon, FileTextIcon } from 'lucide-react';
+
+import { Tabs, TabsContent, TabsList, TabsTrigger } from '@kit/ui/tabs';
+
+interface McpServerTabsProps {
+  prdManagerContent: React.ReactNode;
+  databaseToolsContent?: React.ReactNode;
+}
+
+export function McpServerTabs({
+  prdManagerContent,
+  databaseToolsContent,
+}: McpServerTabsProps) {
+  return (
+    <div className="h-full">
+      <Tabs defaultValue="database-tools" className="flex h-full flex-col">
+        <TabsList className="grid w-full grid-cols-2">
+          <TabsTrigger
+            value="database-tools"
+            className="flex items-center gap-2"
+          >
+            <DatabaseIcon className="h-4 w-4" />
+            Database Tools
+          </TabsTrigger>
+          <TabsTrigger value="prd-manager" className="flex items-center gap-2">
+            <FileTextIcon className="h-4 w-4" />
+            PRD Manager
+          </TabsTrigger>
+        </TabsList>
+
+        <TabsContent value="database-tools" className="flex-1 space-y-4">
+          {databaseToolsContent || (
+            <div className="flex h-full items-center justify-center">
+              <div className="text-center">
+                <DatabaseIcon className="text-muted-foreground mx-auto h-12 w-12" />
+                <h3 className="mt-4 text-lg font-semibold">Database Tools</h3>
+                <p className="text-muted-foreground">
+                  Explore database schemas, tables, functions, and enums
+                </p>
+              </div>
+            </div>
+          )}
+        </TabsContent>
+
+        <TabsContent value="prd-manager" className="flex-1 space-y-4">
+          {prdManagerContent}
+        </TabsContent>
+      </Tabs>
+    </div>
+  );
+}